A continual, partial contraction. At any one moment a small number of the total fibers in a muscle contract, producing tautness of the muscle rather than a recongnizable contraction and movement.
A contraction in which the tone or tension within a muscle remains the same, but the lenght of the muscle changes, producing movement and doing work.
muscle contraction in which the muscle fibers shorten
muscle contraction in which the muscle fibers lengthen with resistance
A contraction in which muscle length remains the same, but in which muscle tension increases. The muscle will tighten but will not produce movement or do work.
An abnormal type of contraction in which individual fibers contract asynchronously, producing a flutter of the muscle but no effective movement.
If a muscle fiber(cell) contracts at all, it will contract completely (all the way)
The muscle or muscles whose contraction is mainly responsible for a particular body movement.
The muscle or muscles that relax while the prime mover is contracting to produce the movement.